The tweets about Knight Capital’s $400 million and counting software glitch run the gamut from shocked, to sad, to “I told you so.” No one knows if Knight Capital will survive the weekend, but here is what people are tweeting as the firm searches for a lifeline.

Advanced Trading takes you on an exclusive tour of Abel Noser's New York trading floor, where the agency broker known for transaction cost analysis, is customizing algorithms for the buy side, while growing its fixed income trading and transitions business.